There are a ton of tapes that circulated in the early 1990s, all pointing to a location known mysteriously as "The Barn." This is one of our favorites, from Detroit Techno godfather Derrick May recorded - is my math right?! twenty-seven years ago?! - on August 24, 1989.

We're posting from our collection of a few hundred mixes, one a day M-F until they're all gone, and figured we'd house them here too.